Gas-controlling mechanism for gas-burners.



E. 0. BENTLEY. GAS CONTROLLING MECHANISM FOR. GAS BUBNERS.

APPLICATION FILED FEB. 6, 1912.

Y Patented May 28,

s sums-sum 1.

E. 0. BENTLEY. GAS CONTROLLING MECHANISM FOR GAS BUBNERS. APPLICATION FILED FEB. 6, 1912.

Pateflt'ed May 28, 1912.

a sinus-sum 2.

COLUMBIA PLANOGRAPH C0,, WASHINGTON. D. c.

E. 0. BENTLEY. GAS CONTROLLING MECHANISM FOR GAS BUBNERS.

I APPLICATION FILED FEB. 6, 1912. 1 ,O27,'51 9. Patented May 28, 1912.

3 SHEBTS SHEET 3.

COLUMBIA PLANoGRAPrj cO.. WASHINGTON. 0. c4

burners,

EDWIN OpfBEN r IrEY, or? gunmen, MAR'YLAND,

u GAS CQZfiTROLLING MEcHAnIsM FOR en's-sunnnnsz Specification 01 Letters L Patent.

To all whom it may concern;

Be it known thatI, EDWIN O. BENTLEY,

a citizen of the United States, residing at Baltimore, in the State ofMaryland,have 5 invented certain new and useful Improvements in Gas-Controlling Mechanism for Gas-Burners, of which the followingis a specification. i 4 My present-invention partains to. animproved gas-controlling mechanism for gasthe structure beingespecially adapted for use in connection with the ordi-. nary gas-range.

The invention .is illustrated in the annexed drawings, wherein:

a [Figure 1 is a side elevation ofthe mechanism shown as applied to a, gas stove; Fig. 2 a top;plan viewthereof, a portion of the stove-frame being broken -away;,Fig. 3 a transverse vertical sectional view, taken on the line 3-3 of Fig; 2; Fig. 4 a similar view,

it taken on the line 4.4: of Fig. 2, and Fig. 5

a detail view of the supporting clamp.

The object of thepresent invention is to produce a structure which may readilybe adapted to the ordinary commercial gas stove of to-day, without material change in i c any of the parts other than the substitution of one form of valve'for the ordinaryvalve or cock which isnow employed; that is to say,the introduction of a by-pass valve leading to the pilot burner and the ordinary shut-off valve controlling the supply of gas "to the main burner.

A number of structures have heretofore x at such time throughthe pilot burner so 1 that the main burner will be automatically relighted when the receptacle is again placed in position. .Owing to the small space available for the insertionof such de- 5 vices between the" top of the oven and the upper framework ofxthe stove or range, it

-,has been somewhat of a problem to construct a device which could be properly positioned a and maintainedin its working relation to the otherportions of the stove. The present structure, however, solves the difliculty and produces a construction wherein the gas supplied to the mainburner will be automatically cut ofi when the vessel is removed from 1 the stove, and the pilot automatically turned on, the reverse operation taking place when avessel or utensil'i s again placed upon the stove. If desired, the pilot burner may be constantly lighted. The'mechanism of the present structure stands well within the confines of the stove-frame, so that there is no danger of the parts being inadvertently or operated or actuated or injured.

In the .drawings,'f1' 'ndicates the upper overhanging portion of the stove-frame,

which forms the support for the usual grids UNITED STAWENT OFFICE.

a v r Patented May 28,1912. 8 Application filed February 6,1912. j Serial No. 675,729.

or top pieces 2, and 3 denotes the top of the I oven. The main gas-supply pipe is indicated byt, and as .usual is adapted to have.

a series of burners connected therewith, one only being. shownin' the present instance. The burner may be: ofany approved type,

and is indicated by 5, the air and gas m1X- time passing into the same through the mixing-pipe 6, supported at its outer endin the air-admlssion chamber 7, provided, as usual,

with regulating slides 01': valves to control the amount of air which isdrawn in by. the c gas which is discharged into the same in the form of a jet from the main shut-0E valve 8. Located between said valve 8 and the main 4 is a second valve 9. 'The valve 8 is I provided with the usual stop-cock handle 10, while the valve 9 is furnished with a downwardly-extending stem 11, connected to or formed as an integral portion of the oscillating plug of said controlling valve 9. The plug of said valve is providedwith a thorough-port or passage, affordingcommunication between the main 4 and the valve 8, and with a by-pass 8 as shown in dotted lines inF 2, adapted to throw the main 4 into communication witha tube 12. i

The vouter end offthe tube .12 terminates,

as shown in Fig. 2, .at-a point adjacent. to the main burner Sand there forms a .pilot burner, .The stem "11 ofUthe controlling valve is provided with a crank 13, which is connected with the "operative mechanism about to be described. I

Securedtto the air-mixingpipe 6 i5 3. supporting bracketfof the form best shown a in Fig. 5. It comprises a'Ibody portion 14, of a size adapted to fit around the mixing pipe, and having arms 15 andlfi which may be drawn together by a bolt 17. Eiitending laterally from the upperportion ofthe body member 14 is an arm or bracket member 18, I

provided with a pair of upstanding lugs 19, and at its outer end with a hook-shaped member 20. The lugs and hook-shaped member are bored to provide alined open mgs. Fulcrumed between the lugs 19 and turning on a pm 21 whlch extends through the alined openings just referred to, is an arm or lever 22, the outer end of which extends upwardly to a point above the'burner- 5, and is provided with a spider frame 23,

the central portion of which frame is higher 7 than the outer ends of the arms of the frame, said arms lying at a point below the and frame 23, so as to normally hold the spider frame 23 in its elevated position, as shown in full lines in the drawings. The opposite end 27 of the elbow lever extends downwardly toward the top 3 of the oven,

and has pivotally connected thereto an actuating bar or link 28, the bar being twisted at its mid-length and provided wit-h an opening into which the upwardlyextending member of the crank-arm 13 passes.

It is thought that the operation of the structure will be apparent from the foregoing and an inspection of the drawings. It may be stated, however, that. when a cooking receptacle is placed upon the spider frame 23, it will be depressed or thrown downwardly into the position shown in dotted lines in Fig. 1, thereby rocking the lever 22 and, through the connections above set forth, elevating the weight 26. At the same time, motion will be imparted to the elbow lever, and the valve 9 so turned, through the movement of the bar 28 and the crank 13, that a full passage will be afforded t-herethrough from the main 4 into the valve 8, which at that time is open, permitting a full flow of gas to pass to the main burner 5.

As will be noted, particularly from an inspection of Fig. 1, the parts are all protected against accidental operation, and furthermore, they are so proportioned and arranged that the operative structure may be readily attached to the ordinary mixing tube.

By operating the valve 9 from below, the operation or position of the main valve 8 is in no wise interfered wit-h.

The use of a bracket such as shown, that is, having the lever 22 fulcrumed between one pair of lugs and the elbow lever 25, 27 fulcrumed between the other pair of lugs on the hooked end, renders accuracy or close fitting of the parts unnecessary, and there will be no undue twisting of the mechanism, as otherwise might take place if a single joint were relied upon.

Having thus described my invention, what I claim is:

1. In an automatic cut-off and controlling device for gas-burners of gas-stoves, the combination of a burner; an air-mixing pipe extending therefrom; a bracket secured upon said pipe; a lever fulcrumed upon said bracket, the outer end of said lever extending upwardly to a point above the burner; an elbow-lever likewise fulcrumed upon the bracket; a weight carried by the upper arm of said elbow-lever; connections between said arm and the first-named lever; a valve located between the gas-supply and the airmixing pipe, said valve being provided wit-h a stem having a crank-arm on the lower end thereof; a bar extending from said crankarm to the lower end of the depending arm of the elbow-lever; and a pilot burner.

2. In an automatic cutoff and controlling device for gas-burners of gas-stoves, the combination of a main burn-er; an air-mixing pipe extending therefrom; a bracket adapted to be secured to said pipe, said bracket being provided with a pair of upstanding lugs and a hooked end; a lever fulcrumed between said lugs; a spider frame carried'at the upper end of said lever over the burner; an elbow-lever fulcrumed in the hook-shaped end of the bracket; a weight carried by the upper arm of said elbowlever; a laterally-extending arm carried by the lower portion of the first-named lever; connections between said arm and the upper arm of the elbow-lever; a controlling valve having a stem extending downwardly therefrom and provided with a crank carried at the lower end of said stem; a bar extending from said crank to the lower end of the elbow-lever; and a pilot burner.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

E. O. BENTLEY.

lVitnesses:

C. H. BELLoWs, R. J. KERR.

Copies of this patent ma be obtained for five cents each, by addressing the Commissioner of Patents. Washington, I). G. 

